Seoul, South Korea to Los Angeles is an approximately 17.5-hour flight. You can also do a combination of train and flight. The time zone difference when traveling from Seoul to Los Angeles is minus 17 hours. While traveling from Seoul, expect somewhat warmer days and little chillier nights in Los Angeles, ranging from highs of 34°C to lows of 22°C. Finish your sightseeing early on the 25th (Tue) to allow enough time to travel to Washington DC.

You can fly from Los Angeles to Washington DC in 8 hours. Other options are to do a combination of flight and train; or drive. The time zone changes from Pacific Standard Time to Eastern Standard Time, which is usually a 3 hour difference. In September, daily temperatures in Washington DC can reach 32°C, while at night they dip to 21°C. Wrap up your sightseeing on the 30th (Sun) to allow time to travel to New York City.

You can fly from Washington DC to New York City in 3.5 hours. Other options are to do a combination of flight and bus; or drive. In September, daytime highs in New York City are 31°C, while nighttime lows are 22°C. Cap off your sightseeing on the 6th (Sat) early enough to travel back home.